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| DOI: | 10.1017/wet.2023.54 |
| Web URL(s): | https://bioone.org/journals/weed-technology/volume-37/issue-4/wet.2023.54/Effect-of-spray-droplet-spectra-on-control-of-Poa-annua/10.1017/wet.2023.54.full?tab=ArticleLinkFigureTable Last checked: 01/18/2024 Access conditions: Item is within a limited-access website https://www.cambridge.org/core/journals/weed-technology/article/effect-of-spray-droplet-spectra-on-control-of-poa-annua-with-pronamide/D771874C228E242A1A51BCC30785C6CB Last checked: 01/18/2024 Access conditions: Item is within a limited-access website https://www.cambridge.org/core/services/aop-cambridge-core/content/view/D771874C228E242A1A51BCC30785C6CB/S0890037X23000544a.pdf/effect-of-spray-droplet-spectra-on-control-of-poa-annua-with-pronamide.pdf Last checked: 01/18/2024 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| Publication Type: | Refereed |
| Author(s): | Ignes, Martin; Ferguson, J. Connor; Tseng, Te-Ming; Stewart, Barry R.; Castro, Edicarlos B.; McCurdy, James D. |
| Author Affiliation: | Ignes: Graduate Research Assistant, Department of Plant and Soil Sciences, Mississippi State University, Starkville, MS; Ferguson: Senior Agronomy Sales Enablement Advisor Texoma, Simplot Grower Solutions, Yukon, OK; Tseng and McCurdy: Associate Professor, Department of Plant and Soil Sciences, Mississippi State University, Starkville, MS; Stewart: Professor, Department of Plant and Soil Sciences, Mississippi State University, Starkville, MS; Castro: Forestry R&D - Weed Scientist, Bracell, Lençóis Paulista, Brazil |
| Title: | Effect of spray droplet spectra on control of Poa annua with pronamide |
| Source: | Weed Technology. Vol. 37, No. 4, July/August 2023, p. 368-375. |
| Publishing Information: | Champaign, Illinois: Weed Science Society of America |
| # of Pages: | 8 |
| Keywords: | TIC Keywords: Chemical weed control; Coverage; Droplet size; Flazasulfuron; Foliar uptake; Herbicide combinations; Herbicide efficacy; Herbicide rates; Poa annua control; Pronamide; Synergism Author-Supplied Keywords: Flazasulfuron; Pronamide; Propyzamide; Annual bluegrass; Poa annua L.; POAN; Turfgrass; Herbicide efficacy; Herbicide deposition; Application technology |
| Abstract/Contents: | "Annual bluegrass is a troublesome weed in turfgrass, with reported resistance to at least 12 herbicide sites of action. The mitotic-inhibiting herbicide pronamide has both preemergence and postemergence activity on susceptible annual bluegrass populations. Previous studies suggest that postemergence activity may be compromised due to lack of root uptake, as well as target-site- and translocation-based mechanisms. Research was conducted to determine the effects of spray droplet spectra on spray coverage and control of annual bluegrass with pronamide, flazasulfuron, and a mixture of pronamide plus flazasulfuron. Herbicides were delivered to annual bluegrass plants having two to three leaves via five different spray spectra based on volume median diameters (VMD) of 200, 400, 600, 800, and 1,000 μm. Fluorescent tracer dye was added to each treatment solution to quantify the effects of herbicide and spray droplet spectra on herbicide deposition. In another experiment, the efficacy of 0.58, 1.16, and 2.32 kg pronamide ha-1; 0.022, 0.044, and 0.088 kg flazasulfuron ha-1, or a combination of the two, were assessed in iteration with droplet spectrum sprays of 400 and 1,000 μm on two pronamide-resistant and two pronamide-susceptible annual bluegrass populations. Spray droplet spectrum affected the deposition of pronamide and flazasulfuron, applied alone and in combination. Pronamide foliar deposition decreased with increasing droplet spectra. Pronamide efficacy was affected by droplet spectrum, with the largest (1,000 μm) exhibiting improved control. Flazasulfuron efficacy and pronamide plus flazasulfuron efficacy were not affected by droplet spectra. Pronamide plus flazasulfuron mixture controlled all four populations more effectively than pronamide alone, regardless of droplet spectra. A mixture of pronamide plus flazasulfuron applied with relatively large droplets may be optimal for annual bluegrass control, which offers valuable insights for optimizing herbicide application and combatting herbicide resistance. However, applications in this controlled-growth pot study may not mimic conditions in which thatch and turfgrass canopy limit the soil deposition of pronamide." |
| Language: | English |
| References: | 52 |
| See Also: | See also related item "Effects of spray droplet size on pronamide control of Poa annua" ASA, CSSA, SSSA International Annual Meeting, 2022, p. 141431, R=324996.R=324996 See also related item "Effects of spray droplet size on pronamide control of Poa annua" Proceedings of the Southern Weed Science Society 75th Annual Meeting, 2022, p. 5, R=325156,R=325196 Original version appears in International Turfgrass Society Research Journal, 14(1) June 2022, p. 1080-1083, R=321556,R=321556 |
| Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-like – may be incomplete): | Ignes, M., J. C. Ferguson, T.-M. Tseng, B. R. Stewart, E. B. Castro, and J. D. McCurdy. 2023. Effect of spray droplet spectra on control of Poa annua with pronamide. Weed Technol. 37(4):p. 368-375. |
| Fastlink to access this record outside TGIF: | http://tic.msu.edu/tgif/flink/RECNO/334083 |
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| DOI: 10.1017/wet.2023.54 | |
| Web URL(s) : | https://bioone.org/journals/weed-technology/volume-37/issue-4/wet.2023.54/Effect-of-spray-droplet-spectra-on-control-of-Poa-annua/10.1017/wet.2023.54.full?tab=ArticleLinkFigureTable Last checked: 01/18/2024 Access conditions: Item is within a limited-access website https://www.cambridge.org/core/journals/weed-technology/article/effect-of-spray-droplet-spectra-on-control-of-poa-annua-with-pronamide/D771874C228E242A1A51BCC30785C6CB Last checked: 01/18/2024 Access conditions: Item is within a limited-access website https://www.cambridge.org/core/services/aop-cambridge-core/content/view/D771874C228E242A1A51BCC30785C6CB/S0890037X23000544a.pdf/effect-of-spray-droplet-spectra-on-control-of-poa-annua-with-pronamide.pdf Last checked: 01/18/2024 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: | b2174615 |
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